diff --git a/CHANGELOG.md b/CHANGELOG.md
index b272b12..5e2ec01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.21.1
+- ObserverCore
+  - improve the logic of `handleListObserve` and `handleGridObserve`.
+
 ## 1.21.0
 - ObserverController
   - Add `onPrepareScrollToIndex` for `jumpTo` and `animateTo`.
diff --git a/pubspec.yaml b/pubspec.yaml
index 4e31bd4..7bffa23 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: scrollview_observer
 description: A widget for observing data related to the child widgets being displayed in a ScrollView.
-version: 1.21.0
+version: 1.21.1
 homepage: https://github.com/fluttercandies/flutter_scrollview_observer
 
 environment: